Interstitial fluid sampling device
AssigneeBonsens AB
InventorsNiclas Roxhed, Federico Ribet, Göran Stemme
Life of this patent
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Abstract
A device for extracting an interstitial fluid sample from the skin of a mammal subject is disclosed. The device comprises at least one micro-needle comprising a tip portion configured to be inserted into the skin of the mammal subject, and a passage configured to transport the interstitial fluid from the skin to a retaining material arranged in a channel of a body of the device. The retaining material is fluidically connected to the passage and configured to absorb and store the interstitial fluid sample transported by the passage. A holder configured to receive such a device is also disclosed.
Claims19
A device for extracting an interstitial fluid sample from the skin of a mammal subject, comprising:
- at least one micro-needle comprising a tip portion, an end portion with a notch, and a passage, wherein the tip portion is configured to be inserted into the skin of the mammal subject, and wherein the passage is configured to transport the interstitial fluid sample, extracted from the skin by the at least one micro-needle, away from the tip portion;
- a body configured to support the at least one micro-needle;
- and
- a retaining material arranged in a channel of the body;
- wherein the retaining material is fluidically connected to the passage and configured to absorb and store the interstitial fluid sample transported by the passage, and wherein the retaining material abuts the end portion of the at least one micro-needle by being received in the notch to at least partly overlap a liquid meniscus formed by the filling of the passage with the interstitial fluid sample.
A method for sampling an interstitial fluid sample from the skin of a mammal subject, the method comprising:
- inserting at least one micro-needle comprising a tip portion, an end portion with a notch, and a passage into the skin of the mammal subject,
- transporting the interstitial fluid sample through the passage away from the tip portion,
- absorbing and storing the interstitial fluid sample at a retaining material comprising a porous matrix, wherein the retaining material abuts the end portion of the at least one micro- needle by being received in the notch at least partly overlapping a liquid meniscus formed by the filling of the passage with the interstitial fluid sample, and
- analysing the interstitial fluid sample to measure or detect the presence of one or more analytes/markers.
A device for extracting an interstitial fluid sample from the skin of a mammal subject, comprising:
- at least one micro-needle comprising a tip portion and a passage, wherein the tip portion is configured to be inserted into the skin of the mammal subject, and wherein the passage is configured to transport the interstitial fluid sample, extracted from the skin by the at least one micro-needle, away from the tip portion;
- a body configured to support the at least one micro-needle;
- a retaining material arranged in a channel of the body;
- and
- a fill level indicator for indicating when the interstitial fluid sample stored in the retaining material reaches a predetermined volume;
- wherein the retaining material is fluidically connected to the passage and configured to absorb and store the interstitial fluid sample transported by the passage, and wherein the retaining material abuts an end portion of the at least one micro-needle by being received in a notch of the end portion to at least partly overlap a liquid meniscus formed by the filling of the passage with the interstitial fluid sample.
Dependencies are inferred from the claim text.